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  4. Rheas

Species group · Birds

Rheas

WAnimals has 2 species of rhea, in the family Rheidae.

2 species
1 family
8 countries
25 parks
Weight
15 kg – 40 kg
Length
90 cm – 1.7 m
Lifespan
12 – 20 years

Ranges calculated from the profiles that record the figure, not from all 2.

All 2 species of rheas on WAnimals

Each one has its own full profile. This group does not replace them: it brings them together.

Greater RheaNear Threatened

Greater Rhea

Rhea americana

7 countries10 parks
Near Threatened

Lesser Rhea

Rhea pennata

4 countries15 parks

Conservation status

2 Near Threatened

No species documented in this group is genuinely at risk according to the IUCN, with the data available today.

Where they live

Recorded in 8 countries. The ones with the most species in the group:

  • Argentina2
  • Bolivia2
  • Chile2
  • Brazil1
  • Falkland Islands1
  • Paraguay1
  • Peru1
  • Uruguay1

Where to see them

  • Campos del Tuyu1 species
  • Chaco1 species
  • Copo1 species
  • Defensores del Chaco1 species
  • Eduardo Avaroa1 species
  • El Palmar1 species
  • Emas1 species
  • Esteros de Farrapos1 species
  • Iberá1 species
  • Jaramillo Petrified Forest1 species
  • Lanin1 species
  • Lauca1 species

Did you know…?

  • It is the largest bird in the Americas.

    From Greater Rhea

  • It breeds under a reversed polyandrous system: several females lay in one nest, which the male alone incubates.

    From Greater Rhea

  • A communal nest may hold as many as 80 eggs from several females.

    From Greater Rhea

  • The male does everything: he scrapes the nest, incubates the eggs laid by several different females in the same hollow for forty days, and then raises the brood, which can number more than twenty chicks, on his own.

    From Lesser Rhea

  • Its eggs were a staple food for the Tehuelche and Mapuche peoples of Patagonia, and the shells turn up frequently at archaeological sites across the steppe.

    From Lesser Rhea

Ecosystems

  • Grassland2
  • Desert1
  • Mountain1

See every species group · Explore the species one by one

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